{"data":{"slug":"autumn","name":"Autumn","tagline":"Apache-2.0 Stripe billing layer; Free to 8K billing volume","category":"payments","categoryName":"Payments","url":"https://useautumn.com","github":"https://github.com/useautumn/autumn","pricing":"freemium","hook":"Autumn is attach/check/track billing infra on top of Stripe when you are tired of webhook state machines.","whatsGood":"Apache-2.0. Self-host or Cloud. Model subscriptions, credits, usage limits, entitlements. Three calls: attach (checkout/upgrades), check (access), track (usage). Free Cloud tier: 8K monthly billing volume, 10k customers, 10M API requests.","theCatch":"Vs Polar/Lago/OpenMeter: Stripe abstraction + entitlements — not Polar MoR, not Lago/OpenMeter metering-first. Stripe fees still apply. Pro Cloud from $375/mo. Free path is Free tier or self-host.","verdict":"Apache-2.0 Stripe billing layer. Free tier real; still bring Stripe.","addedAt":"2026-09-04","featured":false,"domain":"Payments","subSpecialty":"Billing","capabilities":["billing","stripe","entitlements"],"surfaces":["Self-host","Hosted"],"ecosystem":["Multi-platform"],"licenseModel":"Freemium","githubStars":2663},"related":[{"slug":"stripe-cli","name":"Stripe CLI","tagline":"Official Stripe terminal for webhooks, events, and API objects"},{"slug":"polar","name":"Polar","tagline":"Apache-2.0 merchant-of-record billing for indie and AI products"},{"slug":"hyperswitch","name":"Hyperswitch","tagline":"Apache-2.0 payment orchestrator you can self-host"},{"slug":"killbill","name":"Kill Bill","tagline":"Apache-2.0 in-house subscriptions and payments, no % take-rate"},{"slug":"lago","name":"Lago","tagline":"AGPLv3 usage and entitlements metering you self-host"}],"links":{"self":"/api/gems/autumn","html":"/gems/autumn","markdown":"/gems/autumn.md","category":"/api/gems?category=payments","categoryPage":"/stacks/payments"}}